John henry rogers



2:Sheets4-Sheet 1.

(No Model.)

J. H.- ROGERS. ANNBALING FURNAGE.

No. 494,597. 4Pat-tened Apr. l1, 1893.

Wit/mises THE Nonnls PETERS co.. Mofo-Limo.. wAs'HmcmN, n. c.

(No Model.)

2 Sheets-Sheet; 2.

- J. H. ROGERS. ANNBALING PURNAGE.

Patented Apr.'4, 1893.

Umano STATES PATENT Ormea.

JOHN HENRY ROGERS, OF GLYNOOED, ENGLAND.

ANNEALINc-FURNACE.

SPECIFICATION forming part of Letters Patent No. 494,597, dated April 4,1893.

Application iiled August 29, 1892. Serial No. 444,442. (No model.)Patented in England June 2, 1891, No. 9,342.

To @ZZ whom it may concern,.-

B'e it known that I, JOHN HENRY Roenes, tin-plate manufacturer, asubject of the Queen of Great Britain, residing at Glyncoed, Llanelly,England, have invented certain new and useful Improvements inAnnealing-Furnaces, (for which I have received Letters Patent in GreatBritain, No. 9,342, dated June 2, 1891,) of which the following is aspecification.

The object of my invention is to improve furnaces used for annealingmore especially for annealing tin and terne plat-es. For annealing theplates I employ three or more but preferably three furnaces ranged inthe arc of a ciicle-eachadapted to be heated by gas from a gas producerintroduced together with air at one end while the products of combustionare led away by chimney outlets at the other end. During working, onefurnace at a time is thus heated. The air for supporting combustion inthis furnace is led through the furnace last heated so that the air isheated and the furnace and the pots containing` plates within it arecooled. The third furnace is opened and the boxes Within it whichcontain plates that have been annealed are removed and fresh boxescontaining plates which are to be annealed are placed into it. Thefurnace is then closed and when closed may be heated by leading throughit the products of combustion which are passing away from the furnacethat is being fired. The furnaces are set end to end and occupy onlypart of a circle. In the remainder of the circle can be ranged twoseries of boxes, one series of boxes which have been removed from one ofthe furnaces can be cooling, while the other series can be emptied andrefilled. The furnaces are formed with the openings in them throughwhich they are to be filled and emptied all in the side which is towardthe center of the circle. At the center of the circle I place a cranewith horizontal radial arm which can be swiveled around a central postto bring its outer end to any point in the circle and can also beextended or contracted and its outer end raised or lowered to placeboxes of plates into or take them from the furnaces.

Figure l is a plan View partly in section of the series of furnaces andcentral charging crane. Fig. 2 is a plan in section of one of thefurnaces and a portion of the next adjoining furnace. Fig. 3 is avertical section on the line A B Fig. 2. v

A A2 A3 are three furnaces ranged in the arc of a circle and constructedwith openings AX on the inner side through which the boxes of plates canbe charged into the furnace or withdrawn. These openings have doorswhich are closed while the furnace is being heated.

Each furnace at its end opens into acharnber B from which an outlet flueO passes to a chimney X.

C is a valve or damper between the end of the chamber and the outletdue.

At the other end of the furnace is a flue E kept supplied with gas froma gas producer at Z.

E are openings from the gas supply flue into the furnace.

E is a Valve by which ,the passage of gas to these openings can becontrolled.

D is a chamber between the chamber B at DX is a valve by which air canbe admitted to the chamber D and passage D.

. I is a flue from the exit end of the last of the assemblage offurnaces to the chamber C at the firing end of the first furnace.

When any one or other of the furnaces say the furnace A has been chargedwith boxes of plates that are to be annealed and the furnace has beenclosed, heated gases from the preceding furnace A3 which is at that timebeing fired are led to it through the passage I which connects them andpass off from the opposite end of the furnace by the chimney outlet C atthat end. Afterward when the firing of the furnace A3 is discontinuedand the valve EX in the passage E through which gas was being suppliedto this furnace is closed the valve or damper B at the exit end of thefurnace A2 is also closed and the cold air inlet Valve at the firing endof the furnace A3 is opened so that cold air can then pass into thefurnace A3. In its passage through the furnace the air becomes heatedand passes in its heated state into the furnace A. At

IOO

the same time gas is admitted to this furnace and the firing of thefurnace is proceeded with. When the furnace A2 has been charged andclosed the chimney outlet between the furnaces A2 and A3 is opened byopening the valve GX and the one between A and A2 is closed-the heatedgases from the furnace A will then be led through the furnace A2 so asto heat its contents.

F F and G G represent boxes containing plates the boxes F may be boxeswhich have just been removed from one of the furnaces and set out tocool. The boxes G may be boxes which have been filled ready to becharged into a furnace.

H is a revolvingr crane the post of which is concentric with the are inwhich the furnaces are ranged.

1. The combination of three or more furnaces arranged in the arc of acircle end to end, each furnace having at one end a flueE connected witha gas producer and which delivers gas to the furnace, and at itsopposite end a chamber B, connected with a chimne7 or exit, an airchamber interposed between the flue E, and the chamber B, an opening Dfor admitting cool air to said chamber, and valves for controlling theentrance and exit of gas and air, substantially as set forth.

2. The combination of three or more furnaces arranged in the arc of acircle end to end, each furnace having at one end a fine E connectedwith a gas producer and which delivers gas to the furnace, and at itsopposite end a chamber B, connected with a chimney or exit, an airchamber interposed between the flue E and the chamber B, an opening DXfor admit ting cool air to said chamber, valves for controlling theentrance and exit of gas and air, and a crane pivoted within the arc offurnaces and arranged to deliver blanks thereto, substantially as setforth.

3. The combination of three or more furnaces arranged end to end, eachhaving at one end a flue E, connected with a gas producer, and a passageE', through which gas is projected downwardly into the furnace upon theblanks, an air chamber D, having a flue D', delivering air to thefurnace above the passage E', a chamber B, at the opposite end of eachfurnace, and connected with a chimney, and a valve or gate BX, foropening and closing communication between the exit passage B and the airchamber D.

4. The combination of the furnaces A A2, arranged end to end, a gaschamber E, at the entrance end of each furnace connected with a gasproducer, a chamber B, at the end of each furnace connected with achimney, an air chamber D between the entranceEof one furnace and theexit chamber B, of the other furnace, a valve or gate BX between saidchambers B and D,avalve for controlling the entrance of cool air to thechamber D, a passage D from the chamber D to the furnace A2, and aflueEfor the passage of gas to the furnace A2 from the gas chamber E.

5. The combination of two or more furnaces arranged in the arc of acircle, openings on the inner side of each furnace through whicharticles may be inserted into or withdrawn from the furnace, a chamberB, into which the exit end of each furnace opens, a chimney fine C,fitted with a valve CX leading from each chamber B, an opening fittedwith a valve BX from each chamber B, into the firing end of the nextfurnace, a gas flue E, tted with a valve EX passing across the interiorof each furnace at a short distance from the firing end, a passage Dbetween the top of this fine and the top of the furnace, passages E forgas to pass into the furnace from the gas fine E and an opening fittedwith a valve D for admitting cold air to the passage D.

JOHN HENRY ROGERS.

Witnesses:

WM. H. WILLIAMS, l0 West Enel, Llcmelly, Carmarthenshire,

. South Wales.

DAVID BOWEN, 22 Stepney Street, Llanclly, C'cw'm.

